Where once the post-holiday schedule was a blizzard of chilly reruns, January is aburst with premieres and finales. Already, the much-adored British miniseries “Downton Abbey” has made its much-awaited season return Sundays on PBS.

NBC has released its full midseason 2013 schedule, including the hotly anticipated return of “Community.” The long-delayed fourth season of the cult NBC comedy, which was pulled from its original… More